W 638/2.5-2Z
Stainless steel deep groove ball bearing with integral sealingStainless steel single row deep groove ball bearing with seals or shields on both sides, provide greater chemical and corrosion resistance. As with deep groove ball bearings generally, they are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.
- Greater chemical and corrosion resistance
- Integral sealing prolongs bearing service life
- Typical benefits of single row deep groove ball bearings
Description
Dimensions
| d | 2.5 mm | Bore diameter |
|---|---|---|
| D | 6 mm | Outside diameter |
| B | 2.6 mm | Width |
| d1 | ≈ 3.7 mm | Shoulder diameter |
| d2 | ≈ 3.7 mm | Recess diameter |
| D2 | ≈ 5.4 mm | Recess diameter |
| r1,2 | min. 0.08 mm | Chamfer dimension |
Abutment dimensions
| da | min. 3.1 mm | Diameter of shaft abutment |
|---|---|---|
| da | max. 3.6 mm | Diameter of shaft abutment |
| Da | max. 5.5 mm | Diameter of housing abutment |
| ra | max. 0.08 mm | Radius of shaft or housing fillet |
Calculation data
| Basic dynamic load rating | C | 0.117 kN |
|---|---|---|
| Basic static load rating | C0 | 0.036 kN |
| Fatigue load limit | Pu | 0.002 kN |
| Reference speed | 170 000 r/min | |
| Limiting speed | 85 000 r/min | |
| Minimum load factor | kr | 0.02 |
| Calculation factor | f0 | 7.1 |
Mass
| Mass bearing | 0.000305 kg |
Tolerance class
| Dimensional tolerances | Normal |
| Radial run-out | Normal |
Tolerances and clearances
Bearing data
Bearing interfaces
